Modify the portrait of the middle-aged man with gray hair and gray mustache wearing a light shirt. Replace the glowing bokeh and circle background with a clean, neutral, soft studio backdrop in solid or softly blended neutral light-gray / warm-beige tones, completely free of bokeh circles, stars, sparkles, or patterns. Keep the man's face, facial features, hair, mustache, clothing, lighting on his face, and overall likeness exactly the same, with natural soft shadows against the new clean neutral background.
